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Description
Ronstan Series 55 Rachet Orbit Block, Triple Becket Cleat SwivelProduct Description Ronstan Series 55 Ratchet Orbit Block, Triple underhung becket, adjustable cleat, auto, swivel Features Automatic and manual ratchet in one block Up to 20: 1 holding power Smooth easing of sheets High performance cleating Swivel shackle head for unlimited block rotation Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points Ultra low profile integrated beckets Sheave 2 5 32 in. Max. Rope 3 8
Product Description
Ronstan Series 55 Ratchet Orbit Block, Triple underhung becket, adjustable cleat, auto, swivel
Features
Automatic and manual ratchet in one block
Up to 20:1 holding power
Smooth easing of sheets
High performance cleating
Swivel shackle head for unlimited block rotation
Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points
Ultra low profile integrated beckets
Sheave Ø - 2 5/32 in.
Max. Rope Ø - 3/8 in.
Max. Cable Ø - in
Pin Ø - - in.
M.W.L. - 1650 lb.
B. L. - 3310 lb.
Weight - 13.8 oz.
Product Information
Automatic ratchet block
Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes*. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong. * Selected Series 55 models.
Awesome ratchet block holding power
Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
Applications
Mainsheet systems and spinnaker sheets on dinghies, catamarans, sport boats and small keel boats to 9 m (30 ft)
RF55410 when paired with RF56330B and a RF65101 lashed to the becket produces a powerful 8:1 mainsheet system for use on catamarans to 5.5m (18 ft). This can be increased to 9:1 by replacing RF35010 with a RF35202
Halyard, vang and backstay applications on boats a 8m (26 ft)
Control line applications on larger yachts
Materials
sheave: Hard anodised Aluminum
Ball Bearings: high compression strength carbon black Acetal
Frame/Cheeks: Toughened, glass fiber reinforced Nylon
Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema
Features
Sheave Ø - 2 5/32 in.
Max. Rope Ø - 3/8 in.
Max. Cable Ø - in
Pin Ø - - in.
M.W.L. - 1650 lb.
B. L. - 3310 lb.
Weight - 13.8 oz.
Product Information
Automatic ratchet block
Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes*. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong. * Selected Series 55 models.
Awesome ratchet block holding power
Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
Applications
Materials
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Durable, Reliable RV Sewer Hose
Style: 20' Rhino Sewer Hose
The Camco RhinoFLEX sewer hose appears to be extremely durable and tough — exactly what you want when it comes to RV sewer equipment. This is one product where you absolutely don’t want leaks, and this hose feels solid and dependable.
I really like that it comes in two 10‑foot sections. You only have to use the length you actually need to reach the dump station, which keeps things cleaner and easier to manage. The fittings lock on securely, and the hose holds its shape well during use.
Overall, a strong, well‑designed sewer hose that gives you confidence every time you dump your tanks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 5
Rv sewer hose
Style: 20' Rhino Sewer Hose
Works great. Easy hool up
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
★★★★★ 5
Easy Install; clear elbow a plus!
Style: 20' Rhino Sewer Hose, Style: 20' Rhino Sewer Hose
This set up was very easy to connect. Strong hooks at the end that attaches to the tank and lock in place. To lock it, I had to use brute force! Omg. :-)
I’m very happy with the clear elbow. I had always shut the tank before it was clear, I am sure.
One concern, I saw leakage between the clear elbow and the adapter that connects with the sewer line.
30 seconds later the leak healed it seal, so to speak
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2026
★★★★★ 5
Best poo tote out their
Size: 36 Gallon, Style: Heavy Duty (2 Wheel)
"I recently purchased the Camco Rhino portable RV toilet tank and I have to say, I am absolutely thrilled with my purchase! This heavy duty tank is exactly what I was looking for and it has exceeded my expectations in every way.
First of all, the tank is incredibly durable and well-made. I can tell that it's built to last and withstand even the toughest camping conditions. And despite its tough exterior, it's surprisingly easy to transport and set up.
But what really sets the Camco Rhino tank apart is its functionality. The tank is designed with the RV user in mind and it has all the features you could possibly need for a comfortable and convenient camping experience. The tank is easy to fill and empty, and the built-in spout makes the process a breeze.
Overall, I am so happy to have found the Camco Rhino portable RV toilet tank. It has made my camping trips so much more comfortable and enjoyable, and I would highly recommend it to any RV enthusiast out there. Thank you Camco Rhino for creating such an amazing product!"
Also after receiving my tank tote it was broken. So I called camco and spoke to a very nice person, without have to go through a phone tree. It's always reassuring to know that a company stands behind their products and is willing to make things right if there are any issues. Camco Rhino has excellent customer service and is committed to ensuring their customers are satisfied with their purchases. I would definitely feel confident buying from them in the future knowing they take care of their customers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2023
★★★★★ 5
great product
Size: 36 Gallon, Style: Heavy Duty (2 Wheel)
very sturdy fits almost my whole tank inside it although it makes it kind of too heavy to move around. It’s really easy to install. It has all the hook ups. It looks great. The size is perfect. Doesn’t seem to make any noise and it’s thick sturdy and and nothing leaks out all the connections are there and they connect very well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
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